How to Replace and Check CVVT.

How to Replace and Check CVVT.

 

How to Replace and Check CVVT.

Model: Hyundai Genesis BH

Year of Model: 2010

Fuel: Gasoline

Displacement: 4600cc

How to Replace and Check CVVT.

2011  G 4.6 DOHC Engine  Engine Control  P0085 Exhaust Valve Control Solenoid Circuit Low (Bank 2)

Study Guide and Component Location Study Guide and General Description Study The CVVT (Continuously Variable Valve Timing) system is installed to the chain sprocket of the intake camshaft. Study This system controls the intake camshaft to provide the optimal valve timing for every driving condition. Study The ECM controls the Oil Control Valve(OCV), based on the signals output from mass air flow, throttle position and engine coolant temperature. Study The CVVT controller regulates the intake camshaft angle using oil pressure through the OCV. As result, Study the relative position between the camshaft and the crankshaft becomes optimal, and the engine torque improves, fuel economy improves, exhaust emissions decrease under overall driving conditions. Study guide and DTC Description Study When ECM detects short to ground in OCV(Bank 2-EX) control circuit, ECM sets DTC P0085. Study guide and DTC Detecting Condition Item Detecting Condition Possible Cause Study DTC Strategy • Power stage diagnosis(Exhaust) • Poor Connection • Open or Short to ground in power circuit • Open in control circuit • OCV Enable Conditions • - Study Threshold value   • Short circuit to ground Diagnosis Time Study • Continuous MIL On Condition • 2 Driving Cycles Study Specification Item Specification Resistance (Ω) 6.7 ~ 7.7 at 20°C(68°F) Study Signal Waveform & Data Fig.1) Normal waveform of OCV at idle. Fig.2) Normal waveform of OCV at acceleration.